BS EN ISO 80000-4:2019

What is ISO 80000-4 - quantities and units of mechanics about?  

ISO 80000 comprises a series of international standards introducing the International System of Quantities. The guidelines of the ISO 80000 family of standards specify the use of physical quantities and units of measurement, along with the related formulas and units, in scientific and educational documents. 

ISO 80000-4 gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given. 

Who is ISO 80000-4 - quantities and units of mechanics for?  

ISO 80000-4 on quantities and units of mechanics has applications for education and research in the fields of:  

• Physics  
• Chemistry 
• Earth science 
• Astronomy 
• Mathematics 
• Technology 
• Biology 

Why should you use ISO 80000-4 - quantities and units of mechanics?  

The availability of standardized quantities and units of mechanics across the sciences and nationalities facilitates research, education, and knowledge expansion. ISO 80000-4 contains detailed information on mass, density, specific volume, momentum, force, weight, impulse, momentum, torque, pressure, stress, strain, Poisson number, modulus, compressibility, polar moment of area, viscosity, energy, work, action etc. 

ISO 80000-4 guidelines provide you with standardized quantities and units of mechanics to facilitate research and education. 

What’s changed since the last update?  

BS EN ISO 80000-4:2019 supersedes ISO 80000‑4:2006. BS EN ISO 80000-4:2019 includes some technical changes with respect to ISO 80000‑4:2006. These include:  

• The table giving the quantities and units has been simplified 
• Some definitions and the remarks have been stated physically more precisely